WO2013137647A1 - Aerosol separator - Google Patents

Aerosol separator Download PDF

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Publication number
WO2013137647A1
WO2013137647A1 PCT/KR2013/002023 KR2013002023W WO2013137647A1 WO 2013137647 A1 WO2013137647 A1 WO 2013137647A1 KR 2013002023 W KR2013002023 W KR 2013002023W WO 2013137647 A1 WO2013137647 A1 WO 2013137647A1
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WO
WIPO (PCT)
Prior art keywords
impact
accordance
aerosol separator
plate
foam
Prior art date
Application number
PCT/KR2013/002023
Other languages
French (fr)
Inventor
Rene Poss
Andreas Tillmann
Tobias WARTH
Sebastian HIEL
Original Assignee
Alantum
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alantum filed Critical Alantum
Priority to CN201380014522.0A priority Critical patent/CN104203367B/en
Priority to JP2015500362A priority patent/JP2015517896A/en
Publication of WO2013137647A1 publication Critical patent/WO2013137647A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
    • B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators

Definitions

  • the present invention relates to an aerosol separator.
  • Apparatuses for the separation of drops from aerosols are generally known from the state of the art.
  • aerosol separators for the separation of cooling lubricant are used in tool machines.
  • cyclones are used due to the limited construction space.
  • these are disadvantageous in as far as their separation efficiency depends on an ideal setting of the volume flow of the aerosol. If the volume flow deviates from an optimum, a reduced drop separation and/or an increased pressure loss can be brought about.
  • technical measures demanding in effort and cost must be made for the regulation of the pressure and of the volume flow for an efficient operation of a cyclone.
  • a plurality of cyclones and a control system are typically provided for their load dependent switching on or off for the compensation of deviations in the volume flow.
  • the potential of cyclones has been found to be insufficient for a miniaturization and separation of drops in the submicron region.
  • Impact separators are used as an alternative to cyclones in passenger vehicles.
  • Known impact separators have a moderate capacity of separation and likewise have an insufficient efficiency on the separation of drops in the submicron region.
  • active separators such as for example, plate separators or electro separators can be used due to the higher throughput and the larger available installation space. These are, however, subjected to an increased probability of failure and require higher costs of investment due to the presence of movable components.
  • the aerosol separator in accordance with the invention has an impact plate arranged in a housing, wherein a foam element is arranged in the region of an impact side of the impact plate.
  • a foam element is arranged in the region of an impact side of the impact plate.
  • the side of the impact plate is to be understood as the impact side onto which an aerosol flow is initially incident.
  • the aerosol separator in accordance with the invention is generally a kind of impact plate separator or impactor separator, wherein the invention is based on the general idea of providing an additional separation medium in the form of a foam element in the region of the impact side of the impact plate, which results in an increased separation performance due to a larger specific surface and a lower pressure loss on throughflow.
  • the foam element moreover provides an efficient drainage of separated liquid, so that the danger of an unwanted tagging along of already separated drops is reduced.
  • the impact plate concept enables a simple, maintenance friendly and compact design of the aerosol separator in accordance with the invention, whereby this is, in particular also suitable for the use in an environment having a small installation space, such as, for example, in a passenger vehicle.
  • the foam element is preferably directly arranged at an impact side surface of the impact plate.
  • the foam element particularly preferably covers the overall impact side which contributes to an ideal separation efficiency.
  • the foam element can generally comprise an arbitrary foam element, for example, a plastic foam.
  • the foam element comprises a metal foam.
  • the foam element can completely consist of a metal foam.
  • a metal foam possesses a high mechanical and thermal stability and thus represents a separation medium having a particularly long lifetime.
  • coalescence processes can be supported due to the matching of the surface properties of the metal foam to the liquid to be separated which leads to a growth of the separated drops and simplifies their drainage.
  • the metal foam has a surface which can be wetted by the liquid to be separated.
  • the separation performance and the drop growth are further increased and the danger of an unwanted tagging along of the already separated drops is further reduced.
  • the use of a metal foam moreover allows a simplified purification of the separation medium, e.g.
  • a metal foam has a high stability with regard to corrosion under the influence of acids and bases and is thus also suitable for the separation from acidic or basic condensation aerosols.
  • the metal foam preferably comprises a nickel based alloy and/or an iron based alloy and, in particular is composed of a nickel based alloy or an iron based alloy.
  • a metal foam is corrosion-resistant with regard to aerosols which include at least one substance selected from the group comprising phosphoric acid, sulfuric acid and sodium hydroxide.
  • the metal foam is preferably formed as open pored.
  • the use of an open pore metal foam brings about advantageous effects with regard to the throughflow capability of the aerosol, the separation performance and the drainage effect for the separated liquid.
  • a particularly high separation efficiency can be achieved through the use of an open pore metal foam having a mean pore diameter of at least 400 ⁇ m.
  • the mean pore diameter of the foam can be defined as a mean value of the pore size of individual pores, wherein the pore size of an individual pore can be calculated as a mean value of a diameter of the individual pores composed of a pore longitudinal direction and a pore transverse direction.
  • the foam element can be formed from different foams.
  • the foam element can have a multi-layered structure.
  • different metal foams can be combined with one another.
  • a metal foam can be combined with a different foam element, for example, a plastic foam.
  • foams having different surface properties such as e.g. foams which are different in the wettability of their surface can be used in order to match the separation performance, the drop growth and the drainage effect to one another.
  • an acceleration zone and a deceleration zone are provided following one another within the housing of the aerosol separator viewed in the flow direction, wherein the impact plate or the plurality of impact plates is/are arranged in the deceleration zone.
  • the acceleration zone preferably has nozzle elements and is, in particular formed by a nozzle plate.
  • the nozzle elements permit an alignment of the aerosol flow onto the impact plate and thus onto the foam element arranged at an impact side of the impact plate, whereby the separation efficiency is optimized.
  • a plurality of impact plates are consecutively arranged after the acceleration zone, wherein the foam element is provided at least in the region of the impact side of the first impact plate viewed in the flow direction. Further foam elements can be provided in the region of the impact sides of further impact plates, e.g. in the region of the impact side of all impact plates.
  • the spacing between respectively adjacent impact plates is preferably larger than the spacing between the acceleration zone and the first impact plate viewed in the flow direction.
  • the spacings between respectively adjacent impact plates increases with increasing distance from the acceleration zone.
  • a further preferred embodiment likewise comprises a plurality of impact plates, which are arranged downstream of the acceleration zone, wherein the foam element is provided at least in the region of the impact side of the first impact plate viewed in the flow direction. Further foam elements can be provided in the region of the impact side of further impact plates, e.g. in the region of the impact side of all impact plates.
  • adjacent impact plates are alternately connected to oppositely disposed housing walls while forming a labyrinth-like flow passage. Through the formation of a labyrinth-like flow passage a multiple deflection of the aerosol flow takes place within the deceleration zone from which an even higher separation efficiency results.
  • the spacings between the impact plates and the housing walls spaced apart from the impact plates increases with increasing distance of the impact plates from the acceleration zone.
  • the aerosol separator of the present invention can be used in an advantageous manner for the separation of liquid, for example oil, from aerosols.
  • oil can be separated from an aerosol with the aid of an aerosol separator in accordance with the invention which oil is formed in a crank housing of a combustion motor of a passenger vehicle.
  • an aerosol separator in accordance with the invention in a compressor is possible for a pressurized air application.
  • the use in the chemical industry, for example, as a droplet separator in colons is also conceivable.
  • Fig. 1 a schematic longitudinal section of an aerosol separator in accordance with the invention.
  • Fig. 1 shows an embodiment of an aerosol separator 10 in accordance with the invention for the separation of oil clouds from a gas flowing out of a crank housing of a combustion motor.
  • the aerosol separator 10 includes a housing 12 extending in a longitudinal direction and whose inner space has a substantially rectangular, quadratic, oval or circular crosssection.
  • An inlet 14 for the gas containing oil cloud flowing from the crank housing is provided at a front end face 16a of the housing 12, and an outlet 18 for purified gas is provided at a rear end face 16b of the housing lying at an opposite side with respect to the front end face 16a.
  • the housing 12 is flowed through by the gas in the Figure from left to right.
  • the inner space of the housing 12 is divided into an inlet zone 22 and a deceleration zone 24 by means of a nozzle plate 20 which is arranged in parallel to the end faces 16a and 16b and is arranged perpendicular to the longitudinal extent of the housing 12.
  • Nozzles 26 are provided in an upper section of the nozzle plate 20 for the acceleration of a gas containing oil cloud entering into the inlet zone 22.
  • the nozzle plate 20 thus defines an acceleration zone.
  • a first impact plate 30a is arranged spaced apart and in parallel to the nozzle plate 20 and is arranged perpendicular to the longitudinal extent of the housing 12 within the deceleration zone 24, which impact plate 30a is connected to an upper housing wall 32a and is spaced apart from a lower housing wall 32 oppositely disposed to the upper housing wall 32a.
  • a surface facing the nozzle plate 20a defines an impact side 34a of the first impact plate 30a.
  • the nozzles 26 of the nozzle plate 20 are aligned so that they deflect the gas containing oil cloud onto the impact side 34a of the first impact plate 30a.
  • a foam element 28 is arranged at the impact side 34a of the first impact plate 30a.
  • the foam element 28 is formed from an open pore metal foam in this embodiment.
  • a second impact plate 30b is arranged downstream of the first impact plate 30a within the deceleration zone 24 in parallel to the nozzle plate 20 and perpendicular to the longitudinal extent of the housing 12 between the first impact plate 30a and the rear end face 16b.
  • the second impact plate 30b is connected to the lower housing wall 32b and is spaced apart from the upper housing wall 32a.
  • a minimum spacing A between the first impact plate 30a and the second impact plate 30b is larger than a minimum spacing B between the first impact plate 30a and the nozzle plate 20.
  • a minimum spacing C between the first impact plate 30a and the lower housing wall 32b is smaller than a minimum spacing D between the second impact plate 30b and the upper housing wall 32a.
  • the dimensioning of the impact plate 30a, 30b transverse to the longitudinal extent of the housing 12 are selected so that the impact plates 30a, 30b, viewed in longitudinal direction, overlap in an overlap region 36. In this manner the impact plates 30a, 30b form a labyrinth-like flow passage within the deceleration zone 24 whose crosssectional area increases when viewed in flow direction.
  • An outlet 38 for separated oil is provided in front of the second impact plate 30b in the lower housing wall 32b when viewed from the nozzle plate 20. If the aerosol separator 10 is installed such that the housing 12 is tilted slightly downwardly in the direction of the outlet 38 the oil separated at the impact plate 30a, 30b and collecting at the lower housing wall 32b can flow in the direction of the outlet 38 and discharge through this.
  • the second impact plate 30b has no foam element 28 at its impact side 34b. In principle it would, however, also be possible to provide a foam element 28.
  • further impact plates can be provided between the second impact plate 30b and the rear end face 16b of the housing 12 and can be alternately connected to the upper and the lower housing wall 32a and/or 32b so that the flow passage proceeds further in a labyrinth-like manner.
  • the spacings A between respectively adjacent impact plates could increase with an increasing distance from the nozzle plate 20.
  • the spacings C and/or D between the impact plates and the housing walls 32b and/or 32a spaced apart from this can increase with an increasing distance of the impact plates from the nozzle plate 20.
  • the further impact plates are preferably dimensioned so that they overlap with respectively adjacent impact plates.
  • further outlets for separated oil can be provided in the lower housing wall 32b on the impact side before the impact plates connected to the lower housing wall 32b.
  • the further impact plates can be provided with foam elements at the impact side.
  • an aerosol to be treated in the present example a gas including an oil cloud exiting a crank housing of a combustion motor flows through the inlet opening 14 into the housing 12 of the aerosol separator 10.
  • the aerosol is accelerated through the nozzles 26 of the nozzle plate 20 and is incident on the foam element 28 arranged at the impact side 34a of the first impact plate 30a at which or in which oil drops are separated from the aerosol.
  • the aerosol flow decelerated and deflected by the foam element 28 subsequently experiences further decelerations and deflections by means of the lower housing wall 32b and the second impact plate 30b, whereby a further separation of oil drops takes place before purified gas exists the housing 12 through the outlet opening 18.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Separating Particles In Gases By Inertia (AREA)

Abstract

The present invention relates to an aerosol separator having an impact plate arranged in a housing, wherein a foam element is arranged in the region of an impact side of the impact plate.

Description

AEROSOL SEPARATOR
The present invention relates to an aerosol separator.
Apparatuses for the separation of drops from aerosols are generally known from the state of the art. For example, aerosol separators for the separation of cooling lubricant are used in tool machines.
In the automotive industry the separation of oil from aerosols which are formed in crank housings of combustion motors plays an important role, since a feedback of aerosols into the suction part of the motor can lead to a contamination and damage of motor components.
In passenger vehicles, for example, cyclones are used due to the limited construction space. However, these are disadvantageous in as far as their separation efficiency depends on an ideal setting of the volume flow of the aerosol. If the volume flow deviates from an optimum, a reduced drop separation and/or an increased pressure loss can be brought about. Thus, technical measures demanding in effort and cost must be made for the regulation of the pressure and of the volume flow for an efficient operation of a cyclone. For example, a plurality of cyclones and a control system are typically provided for their load dependent switching on or off for the compensation of deviations in the volume flow. Furthermore, the potential of cyclones has been found to be insufficient for a miniaturization and separation of drops in the submicron region.
Impact separators are used as an alternative to cyclones in passenger vehicles. Known impact separators, however, have a moderate capacity of separation and likewise have an insufficient efficiency on the separation of drops in the submicron region.
In commercial vehicles active separators, such as for example, plate separators or electro separators can be used due to the higher throughput and the larger available installation space. These are, however, subjected to an increased probability of failure and require higher costs of investment due to the presence of movable components.
It is the object of the present invention to provide a maintenance friendly aerosol separator having a high separation efficiency for a simultaneously simple and compact design.
This object is satisfied by an aerosol separator having the features of claim 1.
The aerosol separator in accordance with the invention has an impact plate arranged in a housing, wherein a foam element is arranged in the region of an impact side of the impact plate. In this connection the side of the impact plate is to be understood as the impact side onto which an aerosol flow is initially incident.
Thus, the aerosol separator in accordance with the invention is generally a kind of impact plate separator or impactor separator, wherein the invention is based on the general idea of providing an additional separation medium in the form of a foam element in the region of the impact side of the impact plate, which results in an increased separation performance due to a larger specific surface and a lower pressure loss on throughflow. The foam element moreover provides an efficient drainage of separated liquid, so that the danger of an unwanted tagging along of already separated drops is reduced. At the same time the impact plate concept enables a simple, maintenance friendly and compact design of the aerosol separator in accordance with the invention, whereby this is, in particular also suitable for the use in an environment having a small installation space, such as, for example, in a passenger vehicle.
Advantageous embodiments of the invention can be found in the subordinate claims, in the description and in the drawing.
The foam element is preferably directly arranged at an impact side surface of the impact plate. The foam element particularly preferably covers the overall impact side which contributes to an ideal separation efficiency.
The foam element can generally comprise an arbitrary foam element, for example, a plastic foam.
In accordance with a preferred embodiment the foam element, however, comprises a metal foam. For example, the foam element can completely consist of a metal foam. A metal foam possesses a high mechanical and thermal stability and thus represents a separation medium having a particularly long lifetime. Furthermore, coalescence processes can be supported due to the matching of the surface properties of the metal foam to the liquid to be separated which leads to a growth of the separated drops and simplifies their drainage. Particularly preferably the metal foam has a surface which can be wetted by the liquid to be separated. Hereby, the separation performance and the drop growth are further increased and the danger of an unwanted tagging along of the already separated drops is further reduced. The use of a metal foam moreover allows a simplified purification of the separation medium, e.g. through thermal regeneration, this means through the combustion of rests of substances, or through washing with suitable solutions and up to sterilization. Furthermore, a metal foam has a high stability with regard to corrosion under the influence of acids and bases and is thus also suitable for the separation from acidic or basic condensation aerosols.
The metal foam preferably comprises a nickel based alloy and/or an iron based alloy and, in particular is composed of a nickel based alloy or an iron based alloy. Such a metal foam is corrosion-resistant with regard to aerosols which include at least one substance selected from the group comprising phosphoric acid, sulfuric acid and sodium hydroxide.
The metal foam is preferably formed as open pored. The use of an open pore metal foam brings about advantageous effects with regard to the throughflow capability of the aerosol, the separation performance and the drainage effect for the separated liquid.
A particularly high separation efficiency can be achieved through the use of an open pore metal foam having a mean pore diameter of at least 400 μm. In this connection the mean pore diameter of the foam can be defined as a mean value of the pore size of individual pores, wherein the pore size of an individual pore can be calculated as a mean value of a diameter of the individual pores composed of a pore longitudinal direction and a pore transverse direction.
The foam element can be formed from different foams. Also the foam element can have a multi-layered structure. For example, different metal foams can be combined with one another. Also, e.g. a metal foam can be combined with a different foam element, for example, a plastic foam. For example, foams having different surface properties, such as e.g. foams which are different in the wettability of their surface can be used in order to match the separation performance, the drop growth and the drainage effect to one another.
In accordance with an embodiment an acceleration zone and a deceleration zone are provided following one another within the housing of the aerosol separator viewed in the flow direction, wherein the impact plate or the plurality of impact plates is/are arranged in the deceleration zone.
The acceleration zone preferably has nozzle elements and is, in particular formed by a nozzle plate. The nozzle elements permit an alignment of the aerosol flow onto the impact plate and thus onto the foam element arranged at an impact side of the impact plate, whereby the separation efficiency is optimized.
In accordance with a preferred embodiment, a plurality of impact plates are consecutively arranged after the acceleration zone, wherein the foam element is provided at least in the region of the impact side of the first impact plate viewed in the flow direction. Further foam elements can be provided in the region of the impact sides of further impact plates, e.g. in the region of the impact side of all impact plates.
The spacing between respectively adjacent impact plates is preferably larger than the spacing between the acceleration zone and the first impact plate viewed in the flow direction. Advantageously the spacings between respectively adjacent impact plates increases with increasing distance from the acceleration zone. Through the provision of a plurality of impact plates the separation efficiency at the aerosol separator can be further increased, even more so when foam elements are arranged in the region of the impact sides of the plurality of impact plates.
A further preferred embodiment likewise comprises a plurality of impact plates, which are arranged downstream of the acceleration zone, wherein the foam element is provided at least in the region of the impact side of the first impact plate viewed in the flow direction. Further foam elements can be provided in the region of the impact side of further impact plates, e.g. in the region of the impact side of all impact plates. Preferably, adjacent impact plates are alternately connected to oppositely disposed housing walls while forming a labyrinth-like flow passage. Through the formation of a labyrinth-like flow passage a multiple deflection of the aerosol flow takes place within the deceleration zone from which an even higher separation efficiency results. Preferably, the spacings between the impact plates and the housing walls spaced apart from the impact plates increases with increasing distance of the impact plates from the acceleration zone.
The aerosol separator of the present invention can be used in an advantageous manner for the separation of liquid, for example oil, from aerosols. For example, oil can be separated from an aerosol with the aid of an aerosol separator in accordance with the invention which oil is formed in a crank housing of a combustion motor of a passenger vehicle. Furthermore, the use of an aerosol separator in accordance with the invention in a compressor is possible for a pressurized air application. The use in the chemical industry, for example, as a droplet separator in colons is also conceivable.
In the following the invention will be described purely by way of example by means of a possible embodiment with reference to the attached drawing. There is shown:
Fig. 1 a schematic longitudinal section of an aerosol separator in accordance with the invention.
<List of reference numerals>
10: aerosol separator
12: housing
14: inlet
16a, 16b: end face
18: outlet for aerosol
20: nozzle plate
22: inlet zone
24: deceleration zone
26: nozzle
28: foam element
30a, 30b: impact plate
32a, 32b: housing wall
34a, 34b: impact side
36: overlap region
38: outlet for separated liquid
A, B, C, D: spacing
Fig. 1 shows an embodiment of an aerosol separator 10 in accordance with the invention for the separation of oil clouds from a gas flowing out of a crank housing of a combustion motor. The aerosol separator 10 includes a housing 12 extending in a longitudinal direction and whose inner space has a substantially rectangular, quadratic, oval or circular crosssection.
An inlet 14 for the gas containing oil cloud flowing from the crank housing is provided at a front end face 16a of the housing 12, and an outlet 18 for purified gas is provided at a rear end face 16b of the housing lying at an opposite side with respect to the front end face 16a. Thus, the housing 12 is flowed through by the gas in the Figure from left to right.
The inner space of the housing 12 is divided into an inlet zone 22 and a deceleration zone 24 by means of a nozzle plate 20 which is arranged in parallel to the end faces 16a and 16b and is arranged perpendicular to the longitudinal extent of the housing 12. Nozzles 26 are provided in an upper section of the nozzle plate 20 for the acceleration of a gas containing oil cloud entering into the inlet zone 22. The nozzle plate 20 thus defines an acceleration zone.
A first impact plate 30a is arranged spaced apart and in parallel to the nozzle plate 20 and is arranged perpendicular to the longitudinal extent of the housing 12 within the deceleration zone 24, which impact plate 30a is connected to an upper housing wall 32a and is spaced apart from a lower housing wall 32 oppositely disposed to the upper housing wall 32a. A surface facing the nozzle plate 20a defines an impact side 34a of the first impact plate 30a. The nozzles 26 of the nozzle plate 20 are aligned so that they deflect the gas containing oil cloud onto the impact side 34a of the first impact plate 30a.
A foam element 28 is arranged at the impact side 34a of the first impact plate 30a. The foam element 28 is formed from an open pore metal foam in this embodiment.
A second impact plate 30b is arranged downstream of the first impact plate 30a within the deceleration zone 24 in parallel to the nozzle plate 20 and perpendicular to the longitudinal extent of the housing 12 between the first impact plate 30a and the rear end face 16b. The second impact plate 30b is connected to the lower housing wall 32b and is spaced apart from the upper housing wall 32a. In this connection a minimum spacing A between the first impact plate 30a and the second impact plate 30b is larger than a minimum spacing B between the first impact plate 30a and the nozzle plate 20. Furthermore, a minimum spacing C between the first impact plate 30a and the lower housing wall 32b is smaller than a minimum spacing D between the second impact plate 30b and the upper housing wall 32a. The dimensioning of the impact plate 30a, 30b transverse to the longitudinal extent of the housing 12 are selected so that the impact plates 30a, 30b, viewed in longitudinal direction, overlap in an overlap region 36. In this manner the impact plates 30a, 30b form a labyrinth-like flow passage within the deceleration zone 24 whose crosssectional area increases when viewed in flow direction.
An outlet 38 for separated oil is provided in front of the second impact plate 30b in the lower housing wall 32b when viewed from the nozzle plate 20. If the aerosol separator 10 is installed such that the housing 12 is tilted slightly downwardly in the direction of the outlet 38 the oil separated at the impact plate 30a, 30b and collecting at the lower housing wall 32b can flow in the direction of the outlet 38 and discharge through this.
For the shown embodiment, the second impact plate 30b has no foam element 28 at its impact side 34b. In principle it would, however, also be possible to provide a foam element 28.
Furthermore, further impact plates can be provided between the second impact plate 30b and the rear end face 16b of the housing 12 and can be alternately connected to the upper and the lower housing wall 32a and/or 32b so that the flow passage proceeds further in a labyrinth-like manner. In this connection the spacings A between respectively adjacent impact plates could increase with an increasing distance from the nozzle plate 20. Likewise the spacings C and/or D between the impact plates and the housing walls 32b and/or 32a spaced apart from this can increase with an increasing distance of the impact plates from the nozzle plate 20. Furthermore, also the further impact plates are preferably dimensioned so that they overlap with respectively adjacent impact plates. Furthermore, further outlets for separated oil can be provided in the lower housing wall 32b on the impact side before the impact plates connected to the lower housing wall 32b. Also the further impact plates can be provided with foam elements at the impact side.
During operation an aerosol to be treated, in the present example a gas including an oil cloud exiting a crank housing of a combustion motor flows through the inlet opening 14 into the housing 12 of the aerosol separator 10. The aerosol is accelerated through the nozzles 26 of the nozzle plate 20 and is incident on the foam element 28 arranged at the impact side 34a of the first impact plate 30a at which or in which oil drops are separated from the aerosol. The aerosol flow decelerated and deflected by the foam element 28 subsequently experiences further decelerations and deflections by means of the lower housing wall 32b and the second impact plate 30b, whereby a further separation of oil drops takes place before purified gas exists the housing 12 through the outlet opening 18.
Due to coalescence processes, in particular at the foam element 28 and/or in the foam element 28, separated oil drops are subjected to a drop growth. The formed drops are deflected through the pores of the metal foam and drop onto the lower housing wall 32b correspondingly drops separated at the second impact plate 30b can flow towards the lower housing wall 32b. The oil collecting at the lower housing wall 32b flows in the direction of the outlet 38 in the installed state due to the downward extent of the aerosol separator 10 and is separated through this outlet 38.

Claims (10)

  1. An aerosol separator (10) having an impact plate arranged in a housing,
    characterized in that
    a foam element (28) is arranged in the region of an impact side (34) of the impact plate (30).
  2. An aerosol separator (10) in accordance with claim 1,
    characterized in that
    the foam element (28) comprises a metal foam.
  3. An aerosol separator (10) in accordance with claim 2,
    characterized in that
    the metal foam comprises a nickel-based alloy and/or an iron-based alloy.
  4. An aerosol separator (10) in accordance with any one of the preceding claims,
    characterized in that
    the foam of the foam element (28) is formed as open pored and/or has a mean pore diameter of at least 400 μm.
  5. An aerosol separator (10) in accordance with any one of the preceding claims,
    characterized in that
    the foam element (28) is formed from different foams and/or has a multi-layered structure.
  6. An aerosol separator (10) in accordance with any one of the preceding claims,
    characterized in that
    an acceleration zone and a deceleration zone (24) are provided following one another within the housing (12) viewed in the flow direction, wherein the impact plate (30) or a plurality of impact plates (30) is/are arranged in the deceleration zone (24).
  7. An aerosol separator (10) in accordance with claim 6,
    characterized in that
    the acceleration zone has nozzle elements (26) and is, in particular formed by a nozzle plate (20).
  8. An aerosol separator (10) in accordance with claim 6 or claim 7,
    characterized in that
    - a plurality of impact plates (30) are arranged downstream of the acceleration zone, wherein the foam element (28) is provided at least in the region of the impact side (34a) of the first impact plate (30a) viewed in the flow direction; and
    - in that the spacing (A) between respectively adjacent impact plates (30) is larger than the spacing (B) between the acceleration zone and the first impact plate (30a) viewed in the flow direction; and/or
    - in that the spacings (A) between respectively adjacent impact plates (30) increases with increasing distance from the acceleration zone.
  9. An aerosol separator (10) in accordance with any one of claims 6 to 8,
    characterized in that
    - a plurality of impact plates (30) are arranged downstream of the acceleration zone, wherein the foam element (28) is provided at least in the region of the impact side (34a) of the first impact plate (30a) viewed in the flow direction; and
    - in that adjacent impact plates (30) are alternately connected to oppositely disposed housing walls (32) while forming a labyrinth-like flow passage.
  10. An aerosol separator (10) in accordance with claim 9,
    characterized in that
    the spacings (C, D) between the impact plates (30) and the housing walls (32) spaced apart from the impact plates (30) increases with increasing distance of the impact plates (30) from the acceleration zone.
PCT/KR2013/002023 2012-03-15 2013-03-13 Aerosol separator WO2013137647A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380014522.0A CN104203367B (en) 2012-03-15 2013-03-13 Aerosol separator
JP2015500362A JP2015517896A (en) 2012-03-15 2013-03-13 Aerosol separator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012005289.8 2012-03-15
DE201210005289 DE102012005289A1 (en) 2012-03-15 2012-03-15 aerosol

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Publication Number Publication Date
WO2013137647A1 true WO2013137647A1 (en) 2013-09-19

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JP2015517896A (en) 2015-06-25
DE102012005289A1 (en) 2013-09-19
CN104203367B (en) 2016-08-24

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